Laxmi, you may be interested to know that about twenty years ago , I began treating those presenting with so called jumpers knee, sometimes called patello femoral syndrome , retro patella bursitis, etc by mobilising L3 on the side of the knee problem. This must be done continuously untill the stiffness and protective tightening at this joint is relieved. By doing so the inflammatory event of the facet joijnt and its adjacent nerve is resolved and the symptoms at the knee are entireley andf permanently eliminated. In therapeutic hindsight then we can say that when this happens ( almost always ) the PFS problem has been shown to be a referred event , mediated by irritation at the L3 ( femoral ) nerve root.
In most cases , this problem is complete;ly resolved over one to three treatments , without attention to the knee at all. VMO function is restored without exercise , swelling and pain goes within twenty four hours ( effects on pain are instantaneous, most can squat through full range after one treatment without pain ) after the first treatment and it is an entirely satisfactory conclusion to an otherwise vexing and intransigent problem. I recommend next time you have a PFS patioent , you palpate and attempt to mobilise L3. I would be happy to help you further with the method if you wish . This has been working well as my first line method now since that time .